Injection Molding & Structural Foam Engineered for Production
Large-format components and long production runs require coordinated execution from tooling through steady manufacturing. Our operations are structured to keep tooling, process control, and engineering aligned. We begin with tooling strategy and production planning, whether building new molds or transferring existing ones into our facility. From validation through full-scale production, each stage operates within one controlled system that supports custom plastic molding programs with stability and repeatability. This structure is supported by our manufacturing foundation, outlined below.View All Plastic Fabrication Services
Structural Foam Injection Molding
Structural foam molding is central to how we execute complex, large-part injection molding programs. It allows us to mold thick wall components in the .200” to .500” range.
Custom Plastic Injection Molding
Our custom plastic molding capabilities support durable and industrial OEM applications requiring strength, repeatability, and sustained high-volume injection molding performance.
In-House Tool Room and Mold Maintenance
Our full-service, in-house tool room gives us direct control over mold build, refurbishment, and ongoing maintenance. Customers retain ownership of their tooling, and we store and service molds internally to protect production.
Tool Transfer and Validation
We manage structured tooling transfers with a focus on continuity and uptime. Existing molds are inspected, refurbished if needed, validated, and brought into steady production.
Large Tonnage Production
Our molding platform supports larger components and programs that require sustained, high-volume output. We are structured for long production runs where process stability and consistent execution matter most.
Built for High-Volume Manufacturing
Our manufacturing program is built to support high-volume injection molding programs that require process control, experienced teams, and consistent execution. With nearly 90 injection molding machines operating in a 24/7 production environment, supported by a dedicated in-house tool room, we maintain direct control over tooling, process stability, and response time.
Our operation is structured around steady execution and long-term program support. Every program is supported by a project engineer to ensure clear technical ownership from quote through full production.
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Supporting Durable and Industrial OEM Programs
We support high-volume production across consumer products, office furniture, durable goods, building materials, home improvement products, kitchen and appliance components, and electronic housings. These applications often involve larger components, structural requirements, and demanding production schedules. Structural foam molding is particularly well suited for these programs, offering the dimensional stability and weight management needed for load-bearing and thick wall designs.View All Industries We Serve
Consumer Products
Consumer products are very common due to their durability and flexibility in design. See what Port Erie can do for you with expert plastic product manufacturing.
Material Handling
Many industries are reaping the benefits of plastic products. See what plastic industries Port Erie serves and how we can help you.
Lawn and Garden
Outdoor plastic applications need to be durable and easy to use. See how Port Erie can help create your ideal lawn and garden equipment parts.
Building and Construction
Building and construction plastic parts are becoming more and more popular. Learn more about them and how Port Erie can help you.
Proven Production Outcomes
The following programs reflect how we apply structural foam expertise, tooling control, and operational discipline to support long-term OEM production.
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Case Studies
Structural Foam Redesign Reduced Cycle Time 40% and Part Weight 20%A manufacturer producing 80-inch trench drains was struggling with long cycles and dimensional instability. We redesigned the program around structural foam molding and reengineered the tooling strategy to improve efficiency and part performance at scale. The result: 20% weight reduction and 40% faster cycle times across 17 product sizes.
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Case Studies
Production Transfer Stabilized in One WeekendWhen a medical products manufacturer needed an urgent transfer of eight molds to avoid shutting down production, we coordinated tooling updates, validation, and process startup within a single weekend. Full production resumed immediately, protecting the customer’s supply chain.
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Structural Foam Molding for Larger Components
Structural foam molding remains central to how we run large, thick wall programs. It requires specific process control and tooling strategy, and fewer manufacturers operate it reliably at production scale.
As part size increases, traditional injection molding can introduce internal stress, sink, and dimensional instability. Structural foam molding reduces those pressures, supporting wall thicknesses from .200” to .500” while improving stiffness and weight control.
We apply structural foam intentionally for OEM programs that require consistent production performance at scale. It is a specialized capability within our manufacturing platform, supported by disciplined tooling control and process validation.
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Transitioning Production? We Provide Structured Support
When internal molding no longer aligns with your long-term strategy, production must be transitioned carefully to avoid disruption. We regularly manage production transfers, tool relocation and validation, capacity expansion, and program stabilization. Our focus during transition is simple: to protect your tooling investment, maintain supply continuity, and bring the program into steady production with controlled execution.
A Family-Owned Company Focused on Long-Term Manufacturing Partnerships
Founded in Harborcreek, Pennsylvania, in 1953, Port Erie Plastics remains family-owned and engineering-driven. We combine the responsiveness of a privately held manufacturer with the infrastructure of a large-scale production partner. We continue to focus on steady execution, long-term supply relationships, and consistent manufacturing performance. Our high-volume OEM programs depend on our repeatability and controlled execution, and our systems are built to support that expectation year after year.
